Liabilities / Assets
37th percentile
Higher debt load relative to assets than 37% of similar nonprofits.
EIN 38-2328863 • 501(c)3 • Mackinaw City, MI
Profile
Preserving and sharing mackinac's heritage.
Precomputed percentiles relative to similar nonprofits. These scores are descriptive rather than judgmental.
Liabilities / Assets
37th percentile
Higher debt load relative to assets than 37% of similar nonprofits.
Liabilities / Revenue
39th percentile
Higher debt load relative to revenue than 39% of similar nonprofits.
Net Margin
33rd percentile
Higher net margin than 33% of similar nonprofits.
Top Officer Pay
Score unavailable
No filing with officer rows is available for this organization yet.
Asset Growth
85th percentile
Faster asset growth than 85% of similar nonprofits.
Revenue Growth
85th percentile
Faster revenue growth than 85% of similar nonprofits.
Assets
Down$2,331,101
Down $11,433 (-0.5%) from 2024
Liabilities
Down$46,583
Down $16,693 (-26%) from 2024
Net Assets
Up$2,284,518
Up $5,260 (+0.2%) from 2024
Revenue
Down$1,291,920
Down $54,397 (-4.0%) from 2024
Expenses
Up$1,324,160
Up $776,907 (+142%) from 2024
Net Income
Down-$32,240
Down $831,304 (-104%) from 2024
Most recent year
2025 • Form 990Detailed filing. Detailed filing data is available for this year.
Preserving and sharing mackinac's heritage.
Preserving and sharing mackinac's heritage
| Line | Beginning | End | Change |
|---|---|---|---|
| Assets | |||
| Savings and Temporary Cash Investments | $1,322,343 | $1,178,608 | ▼ $143,735 |
| Investments in Publicly Traded Securities | $975,318 | $1,072,809 | ▲ $97,491 |
| Pledges and Grants Receivable | $30,000 | $72,524 | ▲ $42,524 |
| Accounts Receivable | $14,873 | $7,160 | ▼ $7,713 |
| Total Assets | $2,342,534 | $2,331,101 | ▼ $11,433 |
| Liabilities | |||
| Accounts Payable and Accrued Expenses | $54,712 | $43,331 | ▼ $11,381 |
| Deferred Revenue | $8,564 | $3,252 | ▼ $5,312 |
| Total Liabilities | $63,276 | $46,583 | ▼ $16,693 |
| Net Assets / Fund Balance | |||
| Net Assets With Donor Restrictions | $1,389,006 | $1,404,095 | ▲ $15,089 |
| Net Assets Without Donor Restrictions | $890,252 | $880,423 | ▼ $9,829 |
| Total Net Assets Fund Balance | $2,279,258 | $2,284,518 | ▲ $5,260 |
| Total Liabilities and Net Assets / Fund Balance | $2,342,534 | $2,331,101 | ▼ $11,433 |
| Name | Title |
|---|---|
| Todd Callewaert | President |
| David Levy | Trustee |
| Erin Burns | Trustee |
| Heather Martin | Trustee |
| John Kruse | Trustee |
| Nicole Doud | Trustee |
| Richard Card | Trustee |
| Shannon Westblade | Trustee |
| Stephen Murray | Trustee |
| Wendie Keen | Trustee |
| Nancy Porter | Secretary |
| Brian Bailey | Treasurer |
| Skip Young | Vice Preside |
| Line Item | Amount |
|---|---|
| Other Expenses | $1,302,715 |
| Total Fundraising Expense | $135,064 |
| Professional Fundraising Fees | $21,445 |
| Grants and Similar Amounts Paid | $0 |
| Salaries, Compensation, and Employee Benefits | $0 |
| Line Item | Program | Management | Fundraising | Total |
|---|---|---|---|---|
| Fees for Services Other | $12,716 | $43,582 | $52,765 | $109,063 |
| Office Expenses | $9,702 | $4,319 | $34,138 | $48,159 |
| Fees for Services Professional Fundraising | - | - | $21,445 | $21,445 |
| Fees for Services Accounting | - | $7,700 | - | $7,700 |
| Travel | $169 | $914 | $6,279 | $7,362 |
| Other Expenses | $810 | $5,496 | $1,650 | $7,146 |
| Insurance | - | $3,709 | - | $3,709 |
| Total Functional Expenses | $1,123,376 | $65,720 | $135,064 | $1,324,160 |
| Line Item | Amount |
|---|---|
| Total Expenses per Audited Statements | $1,374,606 |
| Expenses per Audited Statements | $1,324,160 |
| Total Expenses per Form 990 | $1,324,160 |
| Expenses Not Reported on Form 990 | $50,446 |
| Line Item | Amount |
|---|---|
| Fundraising Direct Expenses | $29,446 |
| Fundraising Gross Income | $24,425 |
| Professional Fundraising Fees | $21,445 |
| Event | Gross Receipts | Gross Revenue | Direct Expenses | Net Income |
|---|---|---|---|---|
| Gmw Dinner/ Ann | $24,425 | $24,425 | $1,167 | $23,258 |
| Total Events | $24,425 | $24,425 | $29,446 | $-5,021 |
“Review of form 990 is limited to review by the chief development officer.”
“All documents are made available upon request”
“Fundraising expenses 29,446 fundraising expenses -29,446”
“Fundraising expenses 29,446”
“Fundraising expenses 29,446”
This appendix keeps the raw XML leaves available for debugging and edge-case review. The human report above is the primary experience.
| Path | # | Value |
|---|---|---|
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| IRS990/AccountsPayableAccrExpnssGrp/BOYAmt | 0 | 54712 |
| IRS990/AccountsPayableAccrExpnssGrp/EOYAmt | 0 | 43331 |
| IRS990/AccountsReceivableGrp/BOYAmt | 0 | 14873 |
| IRS990/AccountsReceivableGrp/EOYAmt | 0 | 7160 |
| IRS990/ActivitiesConductedPrtshpInd | 0 | false |
| IRS990/ActivityOrMissionDesc | 0 | PRESERVING AND SHARING MACKINAC'S HERITAGE |
| IRS990/AllOtherContributionsAmt | 0 | 1149959 |
| IRS990/AuditCommitteeInd | 0 | true |
| IRS990/BooksInCareOfDetail/PersonNm | 0 | MICHELLE WALK |
| IRS990/BooksInCareOfDetail/PhoneNum | 0 | 2314364100 |
| IRS990/BooksInCareOfDetail/USAddress/AddressLine1Txt | 0 | PO BOX 567 |
| IRS990/BooksInCareOfDetail/USAddress/CityNm | 0 | MACKINAW CITY |
| IRS990/BooksInCareOfDetail/USAddress/StateAbbreviationCd | 0 | MI |
| IRS990/BooksInCareOfDetail/USAddress/ZIPCd | 0 | 49701 |
| IRS990/BusinessRlnWith35CtrlEntInd | 0 | false |
| IRS990/BusinessRlnWithFamMemInd | 0 | false |
| IRS990/BusinessRlnWithOrgMemInd | 0 | false |
| IRS990/ChangeToOrgDocumentsInd | 0 | false |
| IRS990/CollectionsOfArtInd | 0 | false |
| IRS990/CompensationFromOtherSrcsInd | 0 | false |
| IRS990/CompensationProcessCEOInd | 0 | false |
| IRS990/CompensationProcessOtherInd | 0 | false |
| IRS990/ConflictOfInterestPolicyInd | 0 | false |
| IRS990/ConservationEasementsInd | 0 | false |
| IRS990/ConsolidatedAuditFinclStmtInd | 0 | false |
| IRS990/CreditCounselingInd | 0 | false |
| IRS990/CYBenefitsPaidToMembersAmt | 0 | 0 |
| IRS990/CYContributionsGrantsAmt | 0 | 1205276 |
| IRS990/CYGrantsAndSimilarPaidAmt | 0 | 0 |
| IRS990/CYInvestmentIncomeAmt | 0 | 91545 |
| IRS990/CYOtherExpensesAmt | 0 | 1302715 |
| IRS990/CYOtherRevenueAmt | 0 | -4901 |
| IRS990/CYProgramServiceRevenueAmt | 0 | 0 |
| IRS990/CYRevenuesLessExpensesAmt | 0 | -32240 |
| IRS990/CYSalariesCompEmpBnftPaidAmt | 0 | 0 |
| IRS990/CYTotalExpensesAmt | 0 | 1324160 |
| IRS990/CYTotalFundraisingExpenseAmt | 0 | 135064 |
| IRS990/CYTotalProfFndrsngExpnsAmt | 0 | 21445 |
| IRS990/CYTotalRevenueAmt | 0 | 1291920 |
| IRS990/DecisionsSubjectToApprovaInd | 0 | false |
| IRS990/DeductibleArtContributionInd | 0 | false |
| IRS990/DeductibleNonCashContriInd | 0 | false |
| IRS990/DeferredRevenueGrp/BOYAmt | 0 | 8564 |
| IRS990/DeferredRevenueGrp/EOYAmt | 0 | 3252 |
| IRS990/DelegationOfMgmtDutiesInd | 0 | false |
| IRS990/Desc | 0 | PARK PROJECTS & IMPROVEMENTS - PROVIDES SUPPORT FOR THE PRESERVATION AND PRESENTATION OF HISTORIC AND NATURAL RESOURCES MANAGED BY THE MACKINAC STATE HISTORIC PARKS. ARTIFACTS, EXHIBITS, TRAILS, ETC WITHIN MACKINAC ISLAND STATE PARK, FORT MICHILIMACKINAC STATE PARK AND MILLCREEK STATE PARK. |
| IRS990/DescribedInSection501c3Ind | 0 | true |
| IRS990/DisregardedEntityInd | 0 | false |
| IRS990/DocumentRetentionPolicyInd | 0 | false |
| IRS990/DonorAdvisedFundInd | 0 | false |
| IRS990/DonorRestrictionNetAssetsGrp/BOYAmt | 0 | 1389006 |
| IRS990/DonorRestrictionNetAssetsGrp/EOYAmt | 0 | 1404095 |
| IRS990/DonorRstrOrQuasiEndowmentsInd | 0 | false |
| IRS990/ElectionOfBoardMembersInd | 0 | false |
| IRS990/EmployeeCnt | 0 | 0 |
| IRS990/EngagedInExcessBenefitTransInd | 0 | false |
| IRS990/ExpenseAmt | 0 | 1048452 |
| IRS990/FamilyOrBusinessRlnInd | 0 | false |
| IRS990/FederalGrantAuditRequiredInd | 0 | false |
| IRS990/FeesForServicesAccountingGrp/ManagementAndGeneralAmt | 0 | 7700 |
| IRS990/FeesForServicesAccountingGrp/TotalAmt | 0 | 7700 |
| IRS990/FeesForServicesOtherGrp/FundraisingAmt | 0 | 52765 |
| IRS990/FeesForServicesOtherGrp/ManagementAndGeneralAmt | 0 | 43582 |
| IRS990/FeesForServicesOtherGrp/ProgramServicesAmt | 0 | 12716 |
| IRS990/FeesForServicesOtherGrp/TotalAmt | 0 | 109063 |
| IRS990/FeesForServicesProfFundraising/FundraisingAmt | 0 | 21445 |
| IRS990/FeesForServicesProfFundraising/TotalAmt | 0 | 21445 |
| IRS990/ForeignActivitiesInd | 0 | false |
| IRS990/ForeignFinancialAccountInd | 0 | false |
| IRS990/ForeignOfficeInd | 0 | false |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 0 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 1 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 2 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 3 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 4 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 5 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 6 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 7 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 8 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 9 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 10 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 11 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 12 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 1 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 2 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 3 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 4 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 5 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 6 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 7 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 8 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 9 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 10 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 11 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 12 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 1 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 2 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 3 | X |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 2 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 3 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 4 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 5 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 6 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 7 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 8 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 9 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 10 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 11 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 12 | 0 |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 0 | BRIAN BAILEY |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 1 | ERIN BURNS |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 2 | TODD CALLEWAERT |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 3 | RICHARD CARD |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 4 | NICOLE DOUD |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 5 | WENDIE KEEN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 6 | JOHN KRUSE |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 7 | DAVID LEVY |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 8 | HEATHER MARTIN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 9 | STEPHEN MURRAY |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 10 | NANCY PORTER |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 11 | SHANNON WESTBLADE |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 12 | SKIP YOUNG |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 2 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 3 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 4 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 5 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 6 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 7 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 8 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 9 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 10 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 11 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 12 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 2 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 3 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 4 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 5 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 6 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 7 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 8 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 9 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 10 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 11 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 12 | 0 |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 0 | TREASURER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 1 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 2 | PRESIDENT |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 3 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 4 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 5 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 6 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 7 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 8 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 9 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 10 | SECRETARY |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 11 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 12 | VICE PRESIDE |
| IRS990/Form990ProvidedToGvrnBodyInd | 0 | false |
| IRS990/FormationYr | 0 | 1980 |
| IRS990/FormerOfcrEmployeesListedInd | 0 | false |
| IRS990/FSAuditedBasisGrp/SeparateBasisFinclStmtInd | 0 | X |
| IRS990/FSAuditedInd | 0 | true |
| IRS990/FundraisingActivitiesInd | 0 | true |
| IRS990/FundraisingDirectExpensesAmt | 0 | 29446 |
| IRS990/FundraisingGrossIncomeAmt | 0 | 24425 |
| IRS990/GamingActivitiesInd | 0 | false |
| IRS990/GoverningBodyVotingMembersCnt | 0 | 13 |
| IRS990/GrantsToIndividualsInd | 0 | false |
| IRS990/GrantsToOrganizationsInd | 0 | false |
| IRS990/GrantToRelatedPersonInd | 0 | false |
| IRS990/GrossReceiptsAmt | 0 | 1321366 |
| IRS990/GroupReturnForAffiliatesInd | 0 | false |
| IRS990/IncludeFIN48FootnoteInd | 0 | false |
| IRS990/IndependentAuditFinclStmtInd | 0 | true |
| IRS990/IndependentVotingMemberCnt | 0 | 13 |
| IRS990/IndoorTanningServicesInd | 0 | false |
| IRS990/InfoInScheduleOPartVIInd | 0 | X |
| IRS990/InfoInScheduleOPartXIInd | 0 | X |
| IRS990/InsuranceGrp/ManagementAndGeneralAmt | 0 | 3709 |
| IRS990/InsuranceGrp/TotalAmt | 0 | 3709 |
| IRS990/InvestmentIncomeGrp/ExclusionAmt | 0 | 91545 |
| IRS990/InvestmentIncomeGrp/TotalRevenueColumnAmt | 0 | 91545 |
| IRS990/InvestmentInJointVentureInd | 0 | false |
| IRS990/InvestmentsPubTradedSecGrp/BOYAmt | 0 | 975318 |
| IRS990/InvestmentsPubTradedSecGrp/EOYAmt | 0 | 1072809 |
| IRS990/IRPDocumentCnt | 0 | 1 |
| IRS990/IRPDocumentW2GCnt | 0 | 0 |
| IRS990/LegalDomicileStateCd | 0 | MI |
| IRS990/LoanOutstandingInd | 0 | false |
| IRS990/LobbyingActivitiesInd | 0 | false |
| IRS990/LocalChaptersInd | 0 | false |
| IRS990/MaterialDiversionOrMisuseInd | 0 | false |
| IRS990/MembershipDuesAmt | 0 | 55317 |
| IRS990/MembersOrStockholdersInd | 0 | false |
| IRS990/MethodOfAccountingAccrualInd | 0 | X |
| IRS990/MinutesOfCommitteesInd | 0 | true |
| IRS990/MinutesOfGoverningBodyInd | 0 | true |
| IRS990/MissionDesc | 0 | PRESERVING AND SHARING MACKINAC'S HERITAGE. |
| IRS990/MoreThan5000KToIndividualsInd | 0 | false |
| IRS990/MoreThan5000KToOrgInd | 0 | false |
| IRS990/NetAssetsOrFundBalancesBOYAmt | 0 | 2279258 |
| IRS990/NetAssetsOrFundBalancesEOYAmt | 0 | 2284518 |
| IRS990/NetIncmFromFundraisingEvtGrp/TotalRevenueColumnAmt | 0 | -5021 |
| IRS990/NetUnrlzdGainsLossesInvstAmt | 0 | 37500 |
| IRS990/NoDonorRestrictionNetAssetsGrp/BOYAmt | 0 | 890252 |
| IRS990/NoDonorRestrictionNetAssetsGrp/EOYAmt | 0 | 880423 |
| IRS990/NoListedPersonsCompensatedInd | 0 | X |
| IRS990/NondeductibleContributionsInd | 0 | false |
| IRS990/OfficeExpensesGrp/FundraisingAmt | 0 | 34138 |
| IRS990/OfficeExpensesGrp/ManagementAndGeneralAmt | 0 | 4319 |
| IRS990/OfficeExpensesGrp/ProgramServicesAmt | 0 | 9702 |
| IRS990/OfficeExpensesGrp/TotalAmt | 0 | 48159 |
| IRS990/OfficerMailingAddressInd | 0 | false |
| IRS990/OperateHospitalInd | 0 | false |
| IRS990/Organization501c3Ind | 0 | X |
| IRS990/OrganizationFollowsFASB117Ind | 0 | X |
| IRS990/OtherExpensesGrp/Desc | 0 | MSHP PROJECT SUPPORT |
| IRS990/OtherExpensesGrp/Desc | 1 | PROGRAM SUPPLIES |
| IRS990/OtherExpensesGrp/Desc | 2 | MEMBERSHIP BENEFITS |
| IRS990/OtherExpensesGrp/Desc | 3 | MISCELLANEOUS |
| IRS990/OtherExpensesGrp/FundraisingAmt | 0 | 1350 |
| IRS990/OtherExpensesGrp/FundraisingAmt | 1 | 17437 |
| IRS990/OtherExpensesGrp/FundraisingAmt | 2 | 1650 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 0 | 5496 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 0 | 1045432 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 1 | 54547 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 2 | 810 |
| IRS990/OtherExpensesGrp/TotalAmt | 0 | 1045432 |
| IRS990/OtherExpensesGrp/TotalAmt | 1 | 55897 |
| IRS990/OtherExpensesGrp/TotalAmt | 2 | 18247 |
| IRS990/OtherExpensesGrp/TotalAmt | 3 | 7146 |
| IRS990/OtherRevenueMiscGrp/Desc | 0 | MISC. REVENUE |
| IRS990/OtherRevenueMiscGrp/RelatedOrExemptFuncIncomeAmt | 0 | 120 |
| IRS990/OtherRevenueMiscGrp/TotalRevenueColumnAmt | 0 | 120 |
| IRS990/OtherRevenueTotalAmt | 0 | 120 |
| IRS990/PartialLiquidationInd | 0 | false |
| IRS990/PledgesAndGrantsReceivableGrp/BOYAmt | 0 | 30000 |
| IRS990/PledgesAndGrantsReceivableGrp/EOYAmt | 0 | 72524 |
| IRS990/PoliticalCampaignActyInd | 0 | false |
| IRS990/PrincipalOfficerNm | 0 | BRIAN BAILEY |
| IRS990/ProfessionalFundraisingInd | 0 | true |
| IRS990/ProgSrvcAccomActy2Grp/Desc | 0 | COMMUNITY OUTREACH - PROVIDES EDUCATION AND SERVICES TO MANY MEMBERS AND INFORMATION TO THOUSANDS OF PUBLIC VISITORS, BROCHURES, FLYERS AND PERSONAL CORRESPONDENCE IS GENERATED. |
| IRS990/ProgSrvcAccomActy2Grp/ExpenseAmt | 0 | 27873 |
| IRS990/ProgSrvcAccomActy3Grp/Desc | 0 | EDUCATION - MICHIGAN STUDENTS ARE PROVIDED WITH AN IN CLASSROOM PROGRAMS INTERPRETING HISTORY AND NATURAL HISTORY OF THE STRAITS OF MACKINAC REGION. |
| IRS990/ProgSrvcAccomActy3Grp/ExpenseAmt | 0 | 47051 |
| IRS990/ProhibitedTaxShelterTransInd | 0 | false |
| IRS990/PYContributionsGrantsAmt | 0 | 1322887 |
| IRS990/PYExcessBenefitTransInd | 0 | false |
| IRS990/PYInvestmentIncomeAmt | 0 | 19437 |
| IRS990/PYOtherExpensesAmt | 0 | 547253 |
| IRS990/PYOtherRevenueAmt | 0 | 3993 |
| IRS990/PYRevenuesLessExpensesAmt | 0 | 799064 |
| IRS990/PYTotalExpensesAmt | 0 | 547253 |
| IRS990/PYTotalRevenueAmt | 0 | 1346317 |
| IRS990/ReconcilationRevenueExpnssAmt | 0 | -32240 |
| IRS990/RelatedEntityInd | 0 | false |
| IRS990/RelatedOrganizationCtrlEntInd | 0 | false |
| IRS990/ReportInvestmentsOtherSecInd | 0 | false |
| IRS990/ReportLandBuildingEquipmentInd | 0 | false |
| IRS990/ReportOtherAssetsInd | 0 | false |
| IRS990/ReportOtherLiabilitiesInd | 0 | false |
| IRS990/ReportProgramRelatedInvstInd | 0 | false |
| IRS990/SavingsAndTempCashInvstGrp/BOYAmt | 0 | 1322343 |
| IRS990/SavingsAndTempCashInvstGrp/EOYAmt | 0 | 1178608 |
| IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/CurrentTaxYearAmt | 0 | 1205276 |
| IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/CurrentTaxYearMinus1YearAmt | 0 | 1322887 |
| IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/CurrentTaxYearMinus2YearsAmt | 0 | 542226 |
| IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/CurrentTaxYearMinus3YearsAmt | 0 | 429414 |
| IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/CurrentTaxYearMinus4YearsAmt | 0 | 345863 |
| IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/TotalAmt | 0 | 3845666 |
| IRS990ScheduleA/GrossInvestmentIncome509Grp/CurrentTaxYearAmt | 0 | 91545 |
| IRS990ScheduleA/GrossInvestmentIncome509Grp/CurrentTaxYearMinus1YearAmt | 0 | 19437 |
| IRS990ScheduleA/GrossInvestmentIncome509Grp/CurrentTaxYearMinus2YearsAmt | 0 | 3522 |
| IRS990ScheduleA/GrossInvestmentIncome509Grp/CurrentTaxYearMinus3YearsAmt | 0 | 736 |
| IRS990ScheduleA/GrossInvestmentIncome509Grp/CurrentTaxYearMinus4YearsAmt | 0 | 971 |
| IRS990ScheduleA/GrossInvestmentIncome509Grp/TotalAmt | 0 | 116211 |
| IRS990ScheduleA/GrossReceiptsAdmissionsGrp/CurrentTaxYearAmt | 0 | 24545 |
| IRS990ScheduleA/GrossReceiptsAdmissionsGrp/CurrentTaxYearMinus1YearAmt | 0 | 26395 |
| IRS990ScheduleA/GrossReceiptsAdmissionsGrp/CurrentTaxYearMinus2YearsAmt | 0 | 38071 |
| IRS990ScheduleA/GrossReceiptsAdmissionsGrp/CurrentTaxYearMinus3YearsAmt | 0 | 19053 |
| IRS990ScheduleA/GrossReceiptsAdmissionsGrp/CurrentTaxYearMinus4YearsAmt | 0 | 14091 |
| IRS990ScheduleA/GrossReceiptsAdmissionsGrp/TotalAmt | 0 | 122155 |
| IRS990ScheduleA/InvestmentIncomeAndUBTIGrp/CurrentTaxYearAmt | 0 | 91545 |
| IRS990ScheduleA/InvestmentIncomeAndUBTIGrp/CurrentTaxYearMinus1YearAmt | 0 | 19437 |
| IRS990ScheduleA/InvestmentIncomeAndUBTIGrp/CurrentTaxYearMinus2YearsAmt | 0 | 3522 |
| IRS990ScheduleA/InvestmentIncomeAndUBTIGrp/CurrentTaxYearMinus3YearsAmt | 0 | 736 |
| IRS990ScheduleA/InvestmentIncomeAndUBTIGrp/CurrentTaxYearMinus4YearsAmt | 0 | 971 |
| IRS990ScheduleA/InvestmentIncomeAndUBTIGrp/TotalAmt | 0 | 116211 |
| IRS990ScheduleA/InvestmentIncomeCYPct | 0 | 0.03000 |
| IRS990ScheduleA/InvestmentIncomePYPct | 0 | 0.01000 |
| IRS990ScheduleA/PubliclySupportedOrg509a2Ind | 0 | X |
| IRS990ScheduleA/PublicSupportCY509Pct | 0 | 0.97150 |
| IRS990ScheduleA/PublicSupportPY509Pct | 0 | 0.99200 |
| IRS990ScheduleA/PublicSupportTotal509Amt | 0 | 3967821 |
| IRS990ScheduleA/ThirtyThrPctSuprtTestsCY509Ind | 0 | X |
| IRS990ScheduleA/Total509Grp/CurrentTaxYearAmt | 0 | 1229821 |
| IRS990ScheduleA/Total509Grp/CurrentTaxYearMinus1YearAmt | 0 | 1349282 |
| IRS990ScheduleA/Total509Grp/CurrentTaxYearMinus2YearsAmt | 0 | 580297 |
| IRS990ScheduleA/Total509Grp/CurrentTaxYearMinus3YearsAmt | 0 | 448467 |
| IRS990ScheduleA/Total509Grp/CurrentTaxYearMinus4YearsAmt | 0 | 359954 |
| IRS990ScheduleA/Total509Grp/TotalAmt | 0 | 3967821 |
| IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearAmt | 0 | 1321366 |
| IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearMinus1YearAmt | 0 | 1368719 |
| IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearMinus2YearsAmt | 0 | 583819 |
| IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearMinus3YearsAmt | 0 | 449203 |
| IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearMinus4YearsAmt | 0 | 360925 |
| IRS990ScheduleA/TotalSupportCalendarYearGrp/TotalAmt | 0 | 4084032 |
| IRS990ScheduleB/ContributorInformationGrp/ContributorBusinessName/BusinessNameLine1 | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorNum | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/AddressLine1 | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/AddressLine2 | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/City | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/State | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/ZIPCode | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/TotalContributionsAmt | 0 | RESTRICTED |
| IRS990/ScheduleBRequiredInd | 0 | true |
| IRS990ScheduleD/DonatedServicesAndUseFcltsAmt | 0 | 21000 |
| IRS990ScheduleD/DonatedServicesUseFcltsAmt | 0 | 21000 |
| IRS990ScheduleD/ExpensesNotReportedAmt | 0 | 50446 |
| IRS990ScheduleD/ExpensesSubtotalAmt | 0 | 1324160 |
| IRS990ScheduleD/NetUnrealizedGainsInvstAmt | 0 | 37500 |
| IRS990ScheduleD/OtherExpensesIncludedAmt | 0 | 29446 |
| IRS990ScheduleD/OtherRevenueAmt | 0 | 29446 |
| IRS990ScheduleD/RevenueNotReportedAmt | 0 | 87946 |
| IRS990ScheduleD/RevenueSubtotalAmt | 0 | 1291920 |
| IRS990ScheduleD/SupplementalInformationDetail/ExplanationTxt | 0 | FUNDRAISING EXPENSES 29,446 |
| IRS990ScheduleD/SupplementalInformationDetail/ExplanationTxt | 1 | FUNDRAISING EXPENSES 29,446 |
| IRS990ScheduleD/SupplementalInformationDetail/FormAndLineReferenceDesc | 0 | SCHEDULE D, PAGE 4, PART XI, LINE 2D |
| IRS990ScheduleD/SupplementalInformationDetail/FormAndLineReferenceDesc | 1 | SCHEDULE D, PAGE 4, PART XII, LINE 2D |
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| IRS990ScheduleD/TotalRevenuePerForm990Amt | 0 | 1291920 |
| IRS990ScheduleD/TotalRevEtcAuditedFinclStmtAmt | 0 | 1379866 |
| IRS990ScheduleD/TotExpnsEtcAuditedFinclStmtAmt | 0 | 1374606 |
| IRS990ScheduleG/AgrmtProfFundraisingActyInd | 0 | true |
| IRS990ScheduleG/EmailSolicitationsInd | 0 | X |
| IRS990ScheduleG/FundraisingEventInformationGrp/DirectExpenseSummaryEventsAmt | 0 | 29446 |
| IRS990ScheduleG/FundraisingEventInformationGrp/EntertainmentEvent1Amt | 0 | 1330 |
| IRS990ScheduleG/FundraisingEventInformationGrp/EntertainmentTotalEventsAmt | 0 | 1330 |
| IRS990ScheduleG/FundraisingEventInformationGrp/Event1Nm | 0 | GMW DINNER/ ANN |
| IRS990ScheduleG/FundraisingEventInformationGrp/FoodAndBeverageEvent1Amt | 0 | 26949 |
| IRS990ScheduleG/FundraisingEventInformationGrp/FoodAndBeverageTotalEventsAmt | 0 | 26949 |
| IRS990ScheduleG/FundraisingEventInformationGrp/GrossReceiptsEvent1Amt | 0 | 24425 |
| IRS990ScheduleG/FundraisingEventInformationGrp/GrossReceiptsTotalAmt | 0 | 24425 |
| IRS990ScheduleG/FundraisingEventInformationGrp/GrossRevenueEvent1Amt | 0 | 24425 |
| IRS990ScheduleG/FundraisingEventInformationGrp/GrossRevenueTotalEventsAmt | 0 | 24425 |
| IRS990ScheduleG/FundraisingEventInformationGrp/NetIncomeSummaryAmt | 0 | -5021 |
| IRS990ScheduleG/FundraisingEventInformationGrp/OthDirectExpnssTotalEventsAmt | 0 | 1167 |
| IRS990ScheduleG/FundraisingEventInformationGrp/OtherDirectExpensesEvent1Amt | 0 | 1167 |
| IRS990ScheduleG/LicensedStatesCd | 0 | MI |
| IRS990ScheduleG/MailSolicitationsInd | 0 | X |
| IRS990ScheduleG/SpecialFundraisingEventsInd | 0 | X |
| IRS990/ScheduleJRequiredInd | 0 | false |
| IRS990/ScheduleORequiredInd | 0 | true |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 0 | REVIEW OF FORM 990 IS LIMITED TO REVIEW BY THE CHIEF DEVELOPMENT OFFICER. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 1 | ALL DOCUMENTS ARE MADE AVAILABLE UPON REQUEST |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 2 | FUNDRAISING EXPENSES 29,446 FUNDRAISING EXPENSES -29,446 |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 0 | FORM 990, PAGE 6, PART VI, LINE 11B |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 1 | FORM 990, PAGE 6, PART VI, LINE 19 |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 2 | FORM 990, PART XI, LINE 9 |
| IRS990/SchoolOperatingInd | 0 | false |
| IRS990/SignificantChangeInd | 0 | false |
| IRS990/SignificantNewProgramSrvcInd | 0 | false |
| IRS990/StatesWhereCopyOfReturnIsFldCd | 0 | MI |
| IRS990/SubjectToExcsTaxNetInvstIncInd | 0 | false |
| IRS990/SubjectToProxyTaxInd | 0 | false |
| IRS990/SubjToTaxRmnrtnExPrchtPymtInd | 0 | false |
| IRS990/TaxablePartyNotificationInd | 0 | false |
| IRS990/TaxExemptBondsInd | 0 | false |
| IRS990/TerminateOperationsInd | 0 | false |
| IRS990/TotalAssetsBOYAmt | 0 | 2342534 |
| IRS990/TotalAssetsEOYAmt | 0 | 2331101 |
| IRS990/TotalAssetsGrp/BOYAmt | 0 | 2342534 |
| IRS990/TotalAssetsGrp/EOYAmt | 0 | 2331101 |
| IRS990/TotalCompGreaterThan150KInd | 0 | false |
| IRS990/TotalContributionsAmt | 0 | 1205276 |
| IRS990/TotalEmployeeCnt | 0 | 0 |
| IRS990/TotalFunctionalExpensesGrp/FundraisingAmt | 0 | 135064 |
| IRS990/TotalFunctionalExpensesGrp/ManagementAndGeneralAmt | 0 | 65720 |
| IRS990/TotalFunctionalExpensesGrp/ProgramServicesAmt | 0 | 1123376 |
| IRS990/TotalFunctionalExpensesGrp/TotalAmt | 0 | 1324160 |
| IRS990/TotalGrossUBIAmt | 0 | 0 |
| IRS990/TotalLiabilitiesBOYAmt | 0 | 63276 |
| IRS990/TotalLiabilitiesEOYAmt | 0 | 46583 |
| IRS990/TotalLiabilitiesGrp/BOYAmt | 0 | 63276 |
| IRS990/TotalLiabilitiesGrp/EOYAmt | 0 | 46583 |
| IRS990/TotalNetAssetsFundBalanceGrp/BOYAmt | 0 | 2279258 |
| IRS990/TotalNetAssetsFundBalanceGrp/EOYAmt | 0 | 2284518 |
| IRS990/TotalProgramServiceExpensesAmt | 0 | 1123376 |
| IRS990/TotalRevenueGrp/ExclusionAmt | 0 | 91545 |
| IRS990/TotalRevenueGrp/RelatedOrExemptFuncIncomeAmt | 0 | 120 |
| IRS990/TotalRevenueGrp/TotalRevenueColumnAmt | 0 | 1291920 |
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